Cold frame



FIG. 1 is an isometric view of a cold frame showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an isometric view of the cold frame of FIG. 1 with a top lid partially opened;

FIG. 9 is an isometric view of the cold frame of FIG. 1 with a top lid partially opened and a front door opened; and,

FIG. 10 is an isometric view of the cold frame of FIG. 1 with a top lid more fully opened and a front door opened.

The broken lines in the figures illustrate features that form no part of the claimed design for the respective embodiments. 

CLAIM The ornamental design for a cold frame, as shown and described. 